Patek Calastrava 5120Model : Polished 316F Stainless Steel Fine Engineered Caseset, Hobnail Bezel, White Pearl Dial, , Printed Black Roman Markers, Quality Calf Black or Brown Leather Strap with Insignia BuckleMovement: Nickle Plated Asian ModifiedPatek Calibre Automatic Movement,21J, 21600bph, Off Centre Small Gold Insignia Rotor,Functions: Hours, Minutes Blue Dimensions : Dia 39mm x 8,5mmMaterial : 1 piece 316F Forge Stainless Steel Casework Back : Display Caseback with Serial Engraving on Case rims... Crown : One-piece Screw down crown with o ring Crystal:Sapphire Crystal, Please note Genuine Watch does not have AR coating ...Water-Proof to 30m at Factory